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1.
2.
O. Pauli 《European Journal of Lipid Science and Technology》1966,68(4):275-279
Fungicidal and Bactericidal Paints — New Additives for the Oil and Synthetic Resin Lacquers New fungicides, which replace completely the mercury additives in oil, alkyd and synthetic resin lacquers, were developed. In contrast to the mercury additives, they can also be used in the stoving lacquers. They are only of limited use in insulating varnishes. The experience with these additives in different lacquer systems is reported. A combined testing method can give a practicable judgement about the fungicidal activity of such paints in a short time. 相似文献
3.
In a free material formulation, the problem of minimizing a weighted sum of compliance’s from multiple load cases, subject to an active constraint on material volume, is solved in a formulation with two optimality criteria. The first optimality criterion for the distribution of material volume densities is equal value for the weighted elastic energy densities, as a natural extension of the optimality criterion for a single load case. The second optimality criterion for the components of a constitutive matrix (of unit norm) is proportionality to corresponding weighted strain components with the same proportionality factor \(\widehat \lambda \) for all the components, as shortly specified by \(C_{i j k l} = \widehat \lambda \sum _{n} \eta _{n} (\epsilon _{i j})_{n} (\epsilon _{k l})_{n}\) , in traditional notation (n indicate load case). These simple analytical results should be communicated, in spite of the practical objection against design for weighted sum of compliance’s, as compared to worst case design and design considering strength. The application of the approach of the two optimality criteria is illustrated by a 2D example with 8 load cases. Stable and fast convergence is shown. 相似文献
4.
An electrodiffusional three-segment probe was developed with which local axial and radial liquid velocities can be determined.
Application of this probe in gas-liquid flow yields information on local gas hold-up. In coalescing media the commonly used
redox-system Fe(CN)
6
3−
/Fe(CN)
6
4
should be replaced by dissolved oxygen as depolarizer. Measurements of local axial and radial liquid velocity and turbulence
intensity in different bubble columns (D = 150 and 600 mm) showed good agreement with data obtained by hotfilm anemometry.
This paper was presented at the International Workshop on Electrodiffusion Diagnostics of Flows held in Dourdan, France, May
1993. 相似文献
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Richard M. Gunner Rory P. Wilson Mark D. Holton Phil Hopkins Stephen H. Bell Nikki J. Marks Nigel C. Bennett Sam Ferreira Danny Govender Pauli Viljoen Angela Bruns O. Louis van Schalkwyk Mads F. Bertelsen Carlos M. Duarte Martin C. van Rooyen Craig J. Tambling Aoife Gppert Delmar Diesel D. Michael Scantlebury 《Journal of the Royal Society Interface》2022,19(186)
The combined use of global positioning system (GPS) technology and motion sensors within the discipline of movement ecology has increased over recent years. This is particularly the case for instrumented wildlife, with many studies now opting to record parameters at high (infra-second) sampling frequencies. However, the detail with which GPS loggers can elucidate fine-scale movement depends on the precision and accuracy of fixes, with accuracy being affected by signal reception. We hypothesized that animal behaviour was the main factor affecting fix inaccuracy, with inherent GPS positional noise (jitter) being most apparent during GPS fixes for non-moving locations, thereby producing disproportionate error during rest periods. A movement-verified filtering (MVF) protocol was constructed to compare GPS-derived speed data with dynamic body acceleration, to provide a computationally quick method for identifying genuine travelling movement. This method was tested on 11 free-ranging lions (Panthera leo) fitted with collar-mounted GPS units and tri-axial motion sensors recording at 1 and 40 Hz, respectively. The findings support the hypothesis and show that distance moved estimates were, on average, overestimated by greater than 80% prior to GPS screening. We present the conceptual and mathematical protocols for screening fix inaccuracy within high-resolution GPS datasets and demonstrate the importance that MVF has for avoiding inaccurate and biased estimates of movement. 相似文献
8.
C. Wolf M Scherzinger A. Wurz U. Pauli P. Hübner J. Lüthy 《European Food Research and Technology》2000,210(5):367-372
Today DNA-based techniques are very common for the detection of genetically modified organisms (GMOs) in food products. For
fast and easy detection of GMOs, polymerase chain reaction (PCR) screening methods, which amplify common transgenic elements,
are applied in routine analysis. These techniques do not allow differentiation between GMOs and the natural occurrence of
transgenic elements, such as the 35S-promoter of cauliflower mosaic virus (CaMV) or the NOS-terminator of Agrobacterium tumefaciens, and thus may result in false-positive detection of GMOs. In this study we evaluated three different existing 35S screening
systems and report the development of two new CaMV-specific PCR systems. These PCR systems based on CaMV-specific genes allow
the identification of positively screened 35S food samples as naturally virus-infected products or plants. Seven food samples
tested positive in routine 35S screening analysis and negative in GMO specific systems were investigated using the new virus-specific
PCR systems. In all seven samples CaMV was detected.
Received: 26 April 1999 / Revised version: 28 June 1999 相似文献
9.
The influence of interlayer composition in the surface charge and reactivity of layered double hydroxides (LDHs) has been explored. With this purpose, a chloride-intercalated Zn–Cr-LDH has been synthesized by the constant pH coprecipitation method and afterwards exchanged with carbonate to obtain solids with different Cl?/CO32? ratios. The solids structure has been characterized by elemental chemical analysis, powder X-ray diffraction and infrared spectroscopy, while its surface-charging behavior and reactivity have been studied by acid–base potentiometric titrations and electrophoretic mobility determinations. The chloride-intercalated sample shows an increasing hydroxyl adsorption with increasing pH and decreasing support electrolyte concentration and the particles present positive electrophoretic mobility in the measured pH range. As carbonate content increases in the samples, the total OH? uptake diminishes and the samples show an isoelectric point at pH around 10. When the gallery is totally occupied by carbonate anions, the OH uptake vs. pH curves registered at different electrolyte concentrations merge at around pH 10. A LDH–water interface model has been used to give an interpretation to the experimental data. The model indicates that as carbonate content increases, the sample behavior becomes similar to that of a metal (hydr)oxide and that surface (bi)carbonate anions undergo acid–base reactions. 相似文献
10.
van Rossum BJ Castellani F Rehbein K Pauli J Oschkinat H 《Chembiochem : a European journal of chemical biology》2001,2(12):906-914
The assignment of nonexchanging protons of a small microcrystalline protein, the alpha-spectrin SH3 domain (7.2 kDa, 62 residues), was achieved by means of three-dimensional (3D) heteronuclear (1H-13C-13C) magic-angle spinning (MAS) NMR dipolar correlation spectroscopy. With the favorable combination of a high B(0)-field, a moderately high spinning frequency, and frequency-switched Lee-Goldburg irradiation applied during 1H evolution, a proton linewidth < or =0.5 ppm at 17.6 Tesla was achieved for the particular protein preparation used. A comparison of the solid-state 1H chemical shifts with the shifts found in solution shows a remarkable similarity, which reflects the identical protein structures in solution and in the solid. Significant differences between the MAS solid- and liquid-state 1H chemical shifts are only observed for residues that are located at the surface of the protein and that exhibit contacts between different SH3 molecules. In two cases, aromatic residues of neighboring SH3 molecules induce pronounced upfield ring-current shifts for protons in the contact area. 相似文献